JPS60236505A - Production of corrugated conical horn for antenna - Google Patents

Abstract

PURPOSE:To obtain a corrugated conical horn for antenna which can be easily manufactured at a low cost and with high productivity, by forming a corrugation conversion part containing hollowed/projected grooves, a corrugation part and a circular waveguide part in a body with a thin metallic plate together with attachment of a reinforcement material. CONSTITUTION:A material obtained by processing a thin ductile metallic plate into a cone or cylinder shape is fixed by adhesion to a mold (split mold) processed into hollowed/projected grooves having the same form and same size as the inside surface of a corrugated horn for plastic molding in a body. For this plastic molding method, the accuracy of a product is decided by the degree of adhesion of a material to the mold and according to the ductility of the material and the plate thickness. That is, the better the ductility and the smaller the plate thickness the higher the accuracy of a product. Furthermore the weight of the product is reduced to eliminate the problems of transportation and installation. Then flanges 4 and 5 and then a reinforcement material 6 are attached to a product obtained in such a manufacturing process.

Description

Translated fromJapanese

【発明の詳細な説明】〔産業上の利用分野〕この発明はマイクロ波帯や準ミリ波帯の周波数のアンテ
ナに使用される一時放射器コルゲートホーンの製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a temporary radiator corrugated horn used for antennas of frequencies in the microwave band or sub-millimeter wave band.

〔従来の技術〕[Conventional technology]

従来この種のアンテナ用コルゲートホーンは、第２図（
ａｌ、（ｂ）に示すように円形導波管部１、変換部２、
それにホーン部３から構成され、各々導電性の金属を板
金製缶や鍛造または鋳物により円錐剤や円筒状の素材を
用い機械加工し、変換部２、それにホーン部３は内壁面
に所定の間隔で所定の幅と深さの凹の精密な溝を設ける
ために１本１本ｒＮｃＪ加工などによる機械切削によっ
て製作していた。Conventionally, this type of corrugated horn for antennas is shown in Figure 2 (
al, as shown in (b), a circular waveguide section 1, a conversion section 2,
The converting part 2 and the horn part 3 are each machined from a conductive metal by sheet metal can manufacturing, forging, or casting using a conical material or a cylindrical material. In order to create precise concave grooves of a predetermined width and depth, each piece was manufactured by mechanical cutting using rNcJ machining.

このように従来の機械切削による加工法は多くの加工時
間がかかり量産製に乏しく非常に高価なものとなってい
た。また機械切削による変形や歪をなくすためにコルゲ
ートホーン肉厚を厚くする必要あり、重量が重く運搬や
、取付工事の取り扱いが困難であるなどの欠点があった
。As described above, the conventional processing method using mechanical cutting requires a lot of processing time, is not suitable for mass production, and is extremely expensive. In addition, the thickness of the corrugated horn must be increased in order to eliminate deformation and distortion caused by mechanical cutting, which has the disadvantage of being heavy and difficult to transport and handle during installation work.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

この発明は、安価でしかも簡易に製作ができ、軽量かつ
量産性に優れたアンテナ用のコルゲートホーシ製造方法
を提供することを目的とする。An object of the present invention is to provide a method for manufacturing a corrugated hose for an antenna that is inexpensive, easy to manufacture, lightweight, and has excellent mass productivity.

〔間一点を解決するための手段〕[Means to resolve the gap]

本発明は、−次放射器の内壁面の円周上に、所定の間隔
で所定の幅と深さの凹凸の溝を有するコルゲート変換部
と、コルゲート部および円形導波管部とからなるコルゲ
ートホーンの製造方法において、上記凹凸の溝からなる
コルゲート変換部とコルゲート部および円形導波管部を
薄い金属板で一体成形し、補強材を取付けたことを特徴
とする。The present invention provides a corrugated converter section that includes a corrugated converter section having uneven grooves of a predetermined width and depth at predetermined intervals on the circumference of the inner wall surface of a -order radiator, a corrugated section and a circular waveguide section. The method for manufacturing a horn is characterized in that the corrugated converting portion, the corrugated portion, and the circular waveguide portion each having the above-mentioned uneven grooves are integrally molded from a thin metal plate, and a reinforcing member is attached.

〔作用〕[Effect]

製品の内面を機械加工する工程を完全に省略し、素材の
塑性成形を利用した工法により延性のある薄い金属板を
、例えば円錐形または円筒状に加工した素材とし、製品
の内面と同じ形状および寸法に加工された、例えば割型
などに密着させ塑性成形し製作した製品の内面をそのま
ま使用する。The process of machining the inner surface of the product is completely omitted, and a ductile thin metal plate is processed into, for example, a conical or cylindrical shape using a method that utilizes plastic forming of the material. The inner surface of a product that has been processed to size, such as plastic molding by being tightly attached to a split mold, is used as is.

〔実施例〕次にこの発明の実施例コルゲートホーンを添付図を参照
し詳細に説明する。[Embodiment] Next, a corrugated horn according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

第１図（ａ）、（ｂ）は、この発明のコルゲートホーン
の実施例断面および正面図である。第１図（ａ）は長手
方向の断面図、第１図中）は開口面側から見た正面図で
ある。１は円形導波管部、２はコルゲート変換部、３は
円錐コルゲート部、４および５はフランジ、６はコルゲ
ート部の補強材である。この発明の特徴は第１図に示す
ように、□コルゲートホーンを構成する円形導波管、コ
ルゲート変換部それに円錐コルゲート部の凹凸溝を薄い
金属板を塑性加工することにより一体成形し補強材６を
取り付けたことにある。補強材６はプラスチックがよい
。FIGS. 1(a) and 1(b) are a cross-sectional view and a front view of an embodiment of a corrugated horn according to the present invention. FIG. 1(a) is a longitudinal sectional view, and FIG. 1(a) is a front view seen from the opening side. 1 is a circular waveguide section, 2 is a corrugated conversion section, 3 is a conical corrugated section, 4 and 5 are flanges, and 6 is a reinforcing material for the corrugated section. The feature of this invention is that, as shown in Fig. 1, the circular waveguide, the corrugated conversion part, and the concave and convex grooves of the conical corrugated part constituting the corrugated horn are integrally formed by plastic processing a thin metal plate, and the reinforcing material 6 The reason is that the . The reinforcing material 6 is preferably made of plastic.

その製造方法としては、例えばコルゲートホーンの内面
と同じ形状と同一寸法の凹凸の溝に加工された型（例え
ば割型）などに、延性のある薄い金属板を円錐形や円筒
状に加工した素材を密着固定させ、−性成形し、一体加
工により製作するものである。この塑性成形法は素材の
型に対する密着度で製品の精度が決定され、素材の延性
、それに板の厚さが関係し、延性の良いもの、また厚さ
の薄い素材はど精度の高い製品となり、同時に運搬や取
付工事の際に問題となる重量の軽量化も解決できる。上
記のような工程によめ得られた製品に第１図１ａ）に見
られるようにフランジ４．５を取り付け、補強材６を取
り付ける。The manufacturing method is, for example, a material in which a ductile thin metal plate is processed into a conical or cylindrical shape, such as a mold (for example, a split mold) that is processed into uneven grooves with the same shape and dimensions as the inner surface of a corrugated horn. It is manufactured by closely fixing, molding, and integral processing. In this plastic forming method, the accuracy of the product is determined by the degree of adhesion of the material to the mold, and the ductility of the material and the thickness of the plate are related, and products with good ductility and thinner thickness produce products with high precision. At the same time, weight reduction, which is a problem during transportation and installation work, can be solved. A flange 4.5 and a reinforcing member 6 are attached to the product obtained by the above process as shown in FIG. 1a).

〔発明の効果〕〔Effect of the invention〕

以上説明したように、薄い金−板を塑性成形し製作する
方法は従来のような機械加工の工程を完全に省略するこ
とかでき、また成形法の自動化による量産もできるなど
簡易に安価な製品が多量に供給できるようにならた。ま
た従来の製品は機械加工時に起こる変形や歪を押えるめ
たに板厚を厚くする必要があったが、塑性成形法を用い
たこの発明によれば薄い板厚の素材の方が密着性が良い
などのことから重量が大幅に軽減できるとともに、安定
した高精度の製品が量産できるなどの効果を発揮するも
のである。As explained above, the method of manufacturing thin metal plates by plastic forming can completely omit the conventional machining process, and can also be mass-produced by automating the forming method, resulting in simple and inexpensive products. became available in large quantities. In addition, with conventional products, it was necessary to increase the thickness of the plate in order to suppress deformation and distortion that occur during machining, but with this invention, which uses a plastic forming method, thinner plate materials have better adhesion. Due to these advantages, it is possible to significantly reduce weight, and it also enables mass production of stable, high-precision products.

【図面の簡単な説明】[Brief explanation of drawings]

第１図（ａ）はこの発明によるコルゲートホーンの実施
例による長手方向の断面図。第１図中）はこの発明のコルゲートホーンの開口面側か
ら見た正面図。第２図ｔａｉは従来のコルゲートホーンの長手方向の断
面図。第２図中）は従来のコルゲートホーンの開口面側から見
た正面図。　′１・・・円形導波管部、２・・・コルゲート変換部、３
・・・円錐コルゲート部ミ４．５・・・フランジ、６・
・・補強材。特許出願人　日本電気株式会社代理人　弁理士　井　出　直　孝（Ｑ）（ａ）第　２　図（ｂ）（ｂ）FIG. 1(a) is a longitudinal sectional view of an embodiment of the corrugated horn according to the present invention. 1) is a front view of the corrugated horn of the present invention as seen from the opening side. FIG. 2 is a longitudinal sectional view of a conventional corrugated horn. (in Fig. 2) is a front view of a conventional corrugated horn as seen from the opening side. ' 1...Circular waveguide section, 2...Corrugated conversion section, 3
...Conical corrugated part M4.5...Flange, 6.
...Reinforcement material. Patent Applicant NEC Corporation Representative Patent Attorney Naotaka Ide (Q) (a) Figure 2 (b) (b)

Claims (1)

Translated fromJapanese

【特許請求の範囲】[Claims]（１）　円錐形ホーンの内壁面の円周上に所定の間隔で
所定の幅と深さの凹凸の溝を形成するアンテナ用コルゲ
ート円錐ホーンの製造方法において、薄い金属板に塑性
成形を施して上記凹凸の溝を形成し、この金属板の狭い開口側の端部を連続して円形導波管の
形状に一体的に加工し、この金属板に補強材を取り付けることを特徴とするアンテナ用コルゲート円錐ホーンの製
造方法。(1) A method for manufacturing a corrugated conical horn for an antenna in which uneven grooves of a predetermined width and depth are formed at predetermined intervals on the circumference of the inner wall surface of the conical horn, in which a thin metal plate is plastically formed. An antenna characterized in that the uneven groove is formed, the narrow opening side end of this metal plate is continuously and integrally processed into the shape of a circular waveguide, and a reinforcing material is attached to this metal plate. Manufacturing method of corrugated conical horn.